|another name for colocynth|
(Citrullus colocynthis), hairy-stemmed climbing vine, of the gourd family (Cucurbitaceae), native to the Mediterranean region. The colocynth has small, pale greenish yellow flowers, forked tendrils, hairy, deeply cut leaves, and rounded yellow or green fruits that have a bitter taste. The fruits yield a purgative and a derivative that is used against rodents.
Learn more about bitter apple with a free trial on Britannica.com.